Disk-sharpener



No. 751,590. PATENTED FEB. 9, 1904.

H. WHITE.

' DISK SHARPENER.

APPLICATION IILED JUNE 24. 1903.

2 SHEETS-SHEBT 1.

HO IODEL.

No. 751,590. PATENTED FEB. 9, 1904.

H. WHITE.

DISK SHARPENER.

. APPLICATION FILED JUNE 24. 1903.

N0 IODEL. 2 SHEETS-SHEET 2.

UNITED "STATES Patented February 9, 1904.

PATENT OFFICE.

HOTVARD WHITE, OF ORAWVFORDSVILLE, IOXVA, ASSIGNOR. OF TVVO- THlRDS TOO. M. STRAIN AND V. P. & E. J. DAVIDSON, OF ORAlV- FORDSVILLE, IOXVA.

DlSK-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 751,590, dated February9, 1904.

Application filed June 24:, 1903.

To (all whom it may concern:

Be it known that I, HOWARD VHI'IE, a citi- Zen of the United States,residing at Crawfordsville, in the county of Vashington and State ofIowa, have invented certain new and useful lmprovements inDisk-Sharpeners, of which the following is a specification.

This invention has relation to machines for sharpening rotary coltersand disk cutters of any form designed for harrows, plows, oragricultural machinery of any kind, the purpose being to devise amechanism which will facilitate the work and reduce the labor to thesmallest amount possible.

For a full description of the invention and the merits thereof and alsoto acquire aknowledge of the details of construction of the' means foreffecting the result reference is to be had to the following descriptionand drawings hereto attached.

YVhile the essential and characteristic features of the invention aresusceptible of moditication, still the preferred embodiment of theinvention is illustrated in the accompanying drawings, in which Figure 1is a perspective view of amachine embodying the invention, the outermember of the disk-clamp being removed from the mandrel. Fig. 2 is aside elevation of the machine. Fig. 3 is a top plan viewof the machine.Fig. 1 is a perspective view of the tool-holder. Fig. 5 is a detailperspective view of the bit and the end portion of the member of thetool-holder constructed to receive the bit, the parts being separatedand illustrated on a larger scale.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The framework for supporting the operating parts may be of any approvedconstruction, and, as illustrated, the same consists of the bed 1, legs2, braces 3, and spaced uprights 41, the latter receiving at their upperends the driving-gear by means of which rotary motion is imparted to themandrel 5, to which the disk or other work is clamped.

Serial No. 162,935. (No model.)

The bed 1 comprises spaced longitudinal timbers between which arereceived the uprights 5 1. A block 6 projects laterally from the bed andhas a longitudinal slot 7 to admit of longitudinal adjustment of theplate 8, supporting the tool-holder.

The mandrel 5 is provided upon one end with a work-clamp consisting ofplates or members 9 and 10, having their meeting faces of a shape toconform approximately to the concavo-conveX form of the ordinary rollingcolter or disk, such as commonly employed in agricultural machinery. Theplate or member 9 is preferably fixed upon the mandrel and is providedat intervals with grips 11, consisting of fibrous material, such aswooden blocks fitted into recesses or openings formed in the plate ormember 9. The clamp plate or member 10 preferably fits the threaded endof the mandrel loose, so as to slip thereon, and is forced toward themember 9, so as to grip the work by the clamp-nut 12, which is adapt- 7ed to be turned by a spanner, wrench, or kindred tool. The opposite endof the mandrel 5 is provided with a gear-wheel 13, which is in mesh witha pinion 14, secured to shaft 15, journaled in the uprights 4:, parallelwith the 7 mandrel 5, which is mounted in said uprights in any approvedway. A gear-wheel 16, secured to the shaft 15, is in mesh with a pinion17, applied to shaft 18, to which power is applied for operating thetrain of gearing by means of which motion is transmitted to the disk orwork 19. As shown, a band-pulley is applied to one end of the shaft 18,and power is applied thereto from a suitable source by means of adrive-belt (not shown) in the ac- 8 customed manner.

The bit or cutting-tool is indicated at 21 and comprises a shank and acutter portion, the latter being deflected and provided with a chiseledge by means of which the cutting is effected in the operation of themachine. The bit or cutter may be of any structural form and materialbest adapted for the particular work in hand and is removably fitted tothe tool-holder, so as to be substituted or replaced by a different toolwhen required.

The tool-holder comprises pivoted members- 22 and 23, crossed at theirpivotal point and having their short arms constructed to receive thetool and the rotary support 24. One of the members, as 23, is adapted toreceive the tool or cutter 21 and for this purpose is formed with asocket 25, into which the shank of the tool is adapted to slip. Thecorresponding end of the member 22 is constructed to receive the wheelforming the rotary support 2 1, which in the operation of the machinesustains the disk or work 19 against the pressure and action of the toolwhen removing a portion of the disk 19, as in the operation ofsharpening the same.

The tool-holder support consists of the post 26, rod 27, and the plate8, provided with socket 28 to receive the rod 27 journaled and slidabletherein, whereby the tool may be moved laterally and advanced along thework toward and from the mandrel. The post 26 may be an integral part ofthe tool-holder or may be secured thereto in any substantial way, and,as shown, it consists of an extension of the short arm of the member 23and arranged so as to sustain the perpendicular strain imposed upon thetool when the machine is in operation. The plate 8 has alongitud'inalslot 29, through which and the longitudinal slot 7 of the block 6 passesthe clamp-bolt 30, by means of which the plate 8 is secured in anadjusted position. The plate 8 is adjustable longitudinally, laterally,and angularly with reference to the bed 1, thereby admitting of properlypositioning the tool with reference to the work when the machine isadjusted to sharpen a disk of given size anddish.

In the operation of the machine the disk or work 19 is slipped upon themandrel 5 and is clamped thereto between the members 9 and 10 and isrotated by imparting motion to the shaft 18. The tool-holder is moved soas to occupy a position about as shown in Figs. 2 and 4:that is, withthe post 26 upright and the members 22 and 23 horizontal, the rotarysupport 24. being upon the concave side of the disk and the bit or tool21 upon the convex side. By pressing the outer ends of the pivotedmembers 22 and 23 together the cutter 21 is caused to bite into the disk19 and remove a portion of the metal, the lateral strain of the cutterbeing sustained by the rotary support 24: in the manner well understood.A longitudinal movement of the rod or part 27 in the socket 28 admits ofshifting the cutter 21 along the disk 19 toward and from the center. Thetool-holder may be turned down out of the way, as indicated in Fig. 1,by rotating the rod 27in the socket or bearing 28, as will be readilycomprehended.

Having thus described the invention, what is claimed as new is' 1. Incombination, pivoted members, a post projected from one of said membersand out of line with the pivotal connection therebetween, a plate, andmeans pivotally connecting the said post with the said plate to admit ofits lateral swinging, substantially as set forth.

2. In combination, pivoted members, a post projected from one of saidmembers, a plate, and a bar forming a part of said post and rotatablyand slidably mounted upon the plate, substantially as set forth.

3. The herein-described machine comprising a mandrel, a workclamp fittedto said mandrel, a train of gearing for transmitting motion to themandrel, a plate having longitudinal, lateral and angular adjustment andprovided with a socket constituting a bearing, a rod rotatably andslidably mounted in the bearing of said plate, a post projected fromsaid rod, a tool-holder carried by said post and comprising pivotedmembers, one of the members having a socket, a tool removably fitted insaid socket, and a rotary support applied to the other member of thetool-holder, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HOWARD WHITE. [1,. s.]

Witnesses:

N. J. LEAsE, T. E. MAXWELL.

